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CVE-2026-62816Patch(microsoft / windows_10_1607)

LOWCVSS 8.8 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

  • Patch microsoft windows_10_1607 systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

Heap-based buffer overflow in Reliable Multicast Transport Driver (RMCAST) allows an unauthorized attacker to execute code over an adjacent network.

microsoft CVEsBack to dashboard
1.0/ 10 priority

Sources & remediation

Patch / fix
Weakness type (CWE)
CWE-122CWE-190

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

STABLE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • windows_10_1607
  • windows_10_1809
  • windows_10_21h2
  • windows_10_22h2

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 2 observed days
  • Momentum state: stable

What's happening

  • Patch or workaround mentioned in 2 signals
  • Technical details provided in 2 signals
  • Peaked 1d ago at 1 mentions (2026-08-11); latest day: 1
  • 2 total mentions across 2 days

Affected systems

Vendors
microsoft
Products
windows_10_1607windows_10_1809windows_10_21h2windows_10_22h2windows_11_23h2windows_11_24h2windows_11_25h2windows_11_26h1windows_server_2012windows_server_2016

2 versions affected across 13 products

Deep dive

Activity timeline2 mentions / 2d
00111Mentions · 2026-08-11: 1Mentions · 2026-08-12: 1Patch / Workaround · 2026-08-11: 1Patch / Workaround · 2026-08-12: 1Technical Details · 2026-08-11: 1Technical Details · 2026-08-12: 108-1108-12
Signal classification1 categories
Patch
2100.0%
Referenced assets2 URLs
Full discourse2 posts
  • VulniPulse@vulnipulse
    Patch

    🚨 CRITICAL CVE ALERT CVE-2026-62816 · Microsoft Windows Server 2019 · CVSS 8.8 Attackers could execute arbitrary code. Upgrade to a vendor-listed fixed release. 🔎 Full advisory: https://vulnipulse.com/advisories/microsoft-cve-2026-62816 #CyberSecurity #CVE #Microsoft #WindowsServer

    Post summary

    The post announces CVE-2026-62816, a critical Windows Server 2019 vulnerability that permits arbitrary code execution, and advises users to apply the vendor-published update.

    1000043
    7 followersView on X
  • Windows Forum@windowsforum
    Patch

    🛡️ Patch RMCAST via Windows’ August 11 updates—but don’t panic-post “zero-click” yet. CVE-2026-62816 is serious RCE territory, not proof the internet is already on fire. https://windowsforum.com/security-alerts.84/cve-2026-62816-patch-windows-rmcast-remote-code-execution.442637/?utm_source=x&utm_medium=social&utm_campaign=news_node84 #WindowsSecurity #RemoteCodeExecution #Rmcast #Cve202662816 https://t.co/Ksxte1CfyF

    Post summary

    The tweet announces Microsoft’s August 11 patch for CVE-2026-62816, noting it is a serious RCE but not yet actively exploited.

    0000044
    1.3K followersView on X
CPE platform detail24 entries

24 of 24 entries

PartVendorProductVersionTarget SWTarget HW
OSmicrosoftwindows_10_1607--x64
OSmicrosoftwindows_10_1607--x86
OSmicrosoftwindows_10_1809--x64
OSmicrosoftwindows_10_1809--x86
OSmicrosoftwindows_10_21h2--arm64
OSmicrosoftwindows_10_21h2--x64
OSmicrosoftwindows_10_21h2--x86
OSmicrosoftwindows_10_22h2--arm64
OSmicrosoftwindows_10_22h2--x64
OSmicrosoftwindows_10_22h2--x86
OSmicrosoftwindows_11_23h2--arm64
OSmicrosoftwindows_11_23h2--x64
OSmicrosoftwindows_11_24h2--arm64
OSmicrosoftwindows_11_24h2--x64
OSmicrosoftwindows_11_25h2--arm64
OSmicrosoftwindows_11_25h2--x64
OSmicrosoftwindows_11_26h1--arm64
OSmicrosoftwindows_11_26h1--x64
OSmicrosoftwindows_server_2012---
OSmicrosoftwindows_server_2012r2--
OSmicrosoftwindows_server_2016---
OSmicrosoftwindows_server_2019---
OSmicrosoftwindows_server_2022---
OSmicrosoftwindows_server_2025---

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